extract duplicate code into many association

lib/dynamoid/associations.rb

@@ -1,6 +1,7 @@
 # encoding: utf-8
 require 'dynamoid/associations/association'
 require 'dynamoid/associations/single_association'
+require 'dynamoid/associations/many_association'
 require 'dynamoid/associations/has_many'
 require 'dynamoid/associations/belongs_to'
 require 'dynamoid/associations/has_one'

lib/dynamoid/associations/has_and_belongs_to_many.rb

@@ -4,28 +4,9 @@ module Dynamoid #:nodoc:
   # The has and belongs to many association.
   module Associations
     class HasAndBelongsToMany
-      include Dynamoid::Associations::Association
-
-      # Is this array equal to the association's records?
-      #
-      # @return [Boolean] true/false
-      #
-      # @since 0.2.0
-      def ==(other)
-        records == Array(other)
-      end
-
-      # Delegate methods we don't find directly to the records array.
-      #
-      # @since 0.2.0
-      def method_missing(method, *args)
-        if records.respond_to?(method)
-          records.send(method, *args)
-        else
-          super
-        end
-      end
-
+      include Association
+      include ManyAssociation
+
       private
 
       # Find the target association, always another :has_and_belongs_to_many association. Uses either options[:inverse_of] or the source class name 

lib/dynamoid/associations/has_many.rb

@@ -4,27 +4,8 @@ module Dynamoid #:nodoc:
   # The has_many association.
   module Associations
     class HasMany
-      include Dynamoid::Associations::Association
-
-      # Is this array equal to the association's records?
-      #
-      # @return [Boolean] true/false
-      #
-      # @since 0.2.0
-      def ==(other)
-        records == Array(other)
-      end
-
-      # Delegate methods we don't find directly to the records array.
-      #
-      # @since 0.2.0
-      def method_missing(method, *args)
-        if records.respond_to?(method)
-          records.send(method, *args)
-        else
-          super
-        end
-      end
+      include Association
+      include ManyAssociation
 
       private
 

lib/dynamoid/associations/many_association.rb

@@ -0,0 +1,28 @@
+# encoding: utf-8
+module Dynamoid #:nodoc:
+
+  module Associations
+    module ManyAssociation
+
+      # Is this array equal to the association's records?
+      #
+      # @return [Boolean] true/false
+      #
+      # @since 0.2.0
+      def ==(other)
+        records == Array(other)
+      end
+
+      # Delegate methods we don't find directly to the records array.
+      #
+      # @since 0.2.0
+      def method_missing(method, *args)
+        if records.respond_to?(method)
+          records.send(method, *args)
+        else
+          super
+        end
+      end
+    end
+  end
+end